Window construction.



JOHN ROBERTON, OF NEW YORK, N. Y.

WINDOW CONSTRUCTION.

Specification of Letters Patent.

Patented Nov. 22, 1910.

Application filed August 14, 1909. Serial No. 512,902.

To all whom fit may concern.'

Be it known that I, Jol-1N ItonnR'roN, citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certainnew and useful Improvements in Window Construction,of which the following is a specification.

This invention relates to imjnovements in window constructions andespecially refers to the construction of the parting or spacing strip 0nthe window frame.

One of the objects of the invention is the construction of a windowparting or spacing strip for a guide for the window and adapted toengage the window in such a manner that the window can have late 1almovement.

Another object of the invention is the construction of a. parting stripengaging the window under tension and forming a guide for the window.

With the above and other objects in view the invention embraces certaincombinations, constructions and arrangements of parts, clearlyillustrated in the accompanying drawings, in which, U

Figure 1 is a horizontal sectional view showing the invention applied toa window frame having two windows movable thereon, F ig, 2 is a detailvertical sectional view, Fig. 3 is an enlarged detail sectional view ofa parting strip, Fig. t is a de tail perspective view of a portion of aparting strip, and Fig. 5 is another view thereof, in perspective.

Referring to the accompanying drawings, which are merely illustrative ofthe invention, l denotes awindow frame, which is provided with verticalweight chambers 2. The window frame is pro-vided with side members 3,which are formed with vertical recesses 4f, wherein parting strips 5 maybe operatively disposed. The rear faces of the parting strips 5 areprovided with countersunk holes 6, which receive spiral springs 7,adapted to normally hold said parting strips outwardly of the sidemembers 3. The outer faces of the parting strips 5 are formed withspaced V-shaped projections 8, adapted to engage with recesses, ofcorresponding shapes, formed in sashes 9 and 10, which move betweenfixed guides ll. and 12, secured to the window frame l. The partingstrips 5 have a wedging action on the sashcs owing to the V-shapedconstruction of the projections S, which tend to draw the sashes towardeach other, thereby preventing rattling. The metal facing of the partingstrips not only gives the same a good bearing on the sashes butreinforces said parting strips, thereby preventing splitting orspreading. The sashes 9 and l() may be spaced apart from each other ormay be so arranged that there is no space between the same when thecross bars are in a reg istering position.

In operation the sashes are guided in their movements by the partingstrips, which, owing to the tension of the springs 7, allow said sashesto have a certain elastic motion on the window frame. The parting stripsserve to eifectivelyjseal the joint between the two sashes so that thesame serves the purpose of excluding air as well as a guide. Owing' tothe recesses in the side members 3, which are formed of lengthscorresponding to the lengths of the parting strips, the parting stripsare securely held by the sashes in operative position therein. Shouldthe windows become wet or warped the parting strips will allow for theeXpann sion of the wood of the sashes so that the sashes will not bindagainst the frame l.

Having described my invention I claim and desire to secure by LettersPatent:

A window construction having grooved side strips, window strips in saidgrooves, said window strips having wedging projections, springs to holdsaid window strips normally shut, a pair of window sashes havingV-shaped grooves on each side, said wedging projections on each partingstrip adapt-ed to engage said V-shaped grooves and force said sashclosely together.

In testimony whereof I aiiix my signature, in presence of two witnesses.

JOI-IN ROBERTON.

Witnesses:

CHARLES Voe'rs, RIGHARD S. BROWN.

